Biology, Eighth Edition (Raven)

Chapter 44:
The Nervous System

Transmission Across a Synapse

View the animation below, then complete the quiz to test your knowledge of the concept.

1.

The primary neurotransmitter at the neuromuscular junction is

A)

dopamine.

B)

adrenaline.

C)

acetylcholine.

D)

histamine.

E)

serotonin.

2.

Arrange the following in the proper order in which they occur at the pre-synaptic side of a neuromuscular junction.
1. Calcium ions are released
2. Action potential arrives at the presynaptic terminal
3. Neurotransmitter is released

A)

1, 2, 3

B)

2, 1, 3

C)

2, 3, 1

D)

3, 2, 1

E)

3, 1, 2

3.

Arrange the following in the proper order in which they occur at the post-synaptic side of a neuromuscular junction.
1. Action potential is propagated over the muscle cell membrane
2. Depolarization of the post-synaptic membrane
3. Sodium ions move into muscle cell

A)

1, 2, 3

B)

2, 1, 3

C)

2, 3, 1

D)

3, 2, 1

E)

3, 1, 2

4.

The area between the pre-synaptic nerve cell and the post-synaptic muscle cell is termed the synaptic cleft.

A)

True

B)

False

5.

Receptors that bind the neurotransmitter at the post-synaptic cell membrane are voltage-gated.